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Recent advances in bioorthogonal catalysis are increasing the capacity of researchers to manipulate the fate of molecules in complex biological systems. A bioorthogonal uncaging strategy is presented, which is triggered by heterogeneous gold catalysis and facilitates the activation of a structurally diverse range of therapeutics in cancer cell culture. Furthermore, this solid-supported catalytic system enabled locally controlled release of a fluorescent dye into the brain of a zebrafish for the first time, offering a novel way to modulate the activity of bioorthogonal reagents in the most fragile and complex organs. [ABSTRACT FROM AUTHOR]

Thiols are ubiquitous in living systems where they bind strongly to gold surfaces and render interactions with other functional groups basically non‐existent. In their Communication on page 12548 ff., J. Santamaría and A. Unciti‐Broceta et al. describe heterogeneous gold catalysts that enable bioorthogonal uncaging (by O/N‐depropargylation) of clinically approved anticancer drugs in cancer cell culture, and the first intracranial activation of a bioorthogonal probe in a zebrafish. [ABSTRACT FROM AUTHOR]

Thiole sind allgegenwärtig in lebenden Systemen, und ihre starke Bindung an Goldoberflächen hält andere funktionelle Gruppen fast vollständig von diesen fern. In ihrer Zuschrift auf S. 12727 berichten J. Santamaría, A. Unciti ‐ Broceta et al. über Gold ‐ Heterogenkatalysatoren für die bioorthogonale Aktivierung zugelassener Tumortherapeutika (durch O/N ‐ Depropargylierung) in Krebszellkulturen und die erste Aktivierung einer bioorthogonalen Sonde im Gehirn von Zebrafischen. [ABSTRACT FROM AUTHOR]